import dash
import dash.html as html

app = dash.Dash(__name__)

app.layout = html.Div(
    children=[
        html.H1("hell Dash"),
        html.P("这是一个段落"),
        html.Div([html.Span("这是一个span1"), html.Span("这是一个span2")]),
    ]
)

if __name__ == "__main__":
    app.run(debug=True, port=8090)
